Aerosol Freeze Formulation and Delivery System

ABSTRACT

An environmentally safer aerosol freeze spray formulation and delivery system that is under pressure in an aerosol can and can only be released by pulling the trigger of the trigger sprayer by a finger or fingers. The trigger sprayer unit cannot be sprayed until the tab is pulled. The can is cylindrical canister housing and has a dip tube that goes into the can into the freeze spray. The freeze spray formulation in the can travels up through the dip tube up to the trigger sprayer and out a nozzle in which is cold and will flow out as an mist when the trigger is depressed.

CROSS-REFERENCE TO RELATED APPLICATIONS

None

FEDERALLY SPONSORED RESEARCH

None

SEQUENCE LISTING

None

BACKGROUND

Freeze spray is used for medical use for freezing medical biopsies samples from humans or animals, freezing orthodontic archwires for bending and for electronics for testing circuit boards. The current freeze spray formulations are not very environmentally safe. This aerosol sprayer utilizes an environmentally safe formulation for freeze spray. Additionally the trigger sprayer allows the freeze spray to be used in a easy to use way. The trigger sprayer allows the user to be able to pull the tab so the formulation can be sprayed easily. When the tab is not pulled the aerosol freeze cannot be sprayed. Additionally this invention can easily be held in one hand for ease of use and portability.

SUMMARY OF THE INVENTION

The invention is an aerosol freeze spray formulation and delivery system. In a preferred embodiment of the invention the trigger sprayer is fitted onto a mounting cup with a dip tube going to the bottom of the aerosol can to the freeze spray formulation. The direction chamber allows the freeze spray to flow through the trigger sprayer to the nozzle where it will flow out toward the area to be sprayed with the freeze spray formulation. The trigger when depressed puts pressure on the direction chamber that puts pressure on the actuator stem allowing the freeze spray to flow up then out. The nozzle on the trigger sprayer can is configured to allow the freeze spray to flow out rapidly. The freeze spray is in a gaseous form inside the can as well as a liquid form due to pressures of an aerosol can. A mounting cup is placed in the hole at the top of the aerosol can and holds the pressure of the freeze spray formulation. The mounting cup of the aerosol can has a actuator stem that when it is depressed cause the freeze spray formulation to flow out. The aerosol can is cylindrical. The trigger sprayer of the freeze spray has a tab on top of it that can be easily be pulled off which allows the trigger to be depressed and ready to be used. When this tab is not pulled the freeze spray cannot be sprayed for easy storage. The tab has breakaway hinges and can be snapped off easily. The trigger can be depressed by an index finger or other fingers to release the freeze spray formulation. The trigger sprayer has a nozzle wherein the freeze spray can flow out.

Operation of the Invention

When the tab is not pulled the trigger of the freeze spray is locked and cannot be sprayed. The operation of the freeze spray is when there is a needed use, the user simply pulls the tab of the trigger sprayer which is located on top and this enables the trigger assembly to be pushed down on the mounting cup that has a stem sticking up that when depressed allows the propellant in the can to push the freeze spray up through the stem through the trigger sprayer unit through the direction chamber then through the nozzle toward the area to be sprayed. The freeze spray comes out with pressure and because the trigger has a nozzle the user can easily identify the direction to spray the freeze spray.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a perspective view of only the can with the mounting cup and stem alone in a preferred embodiment of the invention.

FIG. 2 shows a perspective view of the trigger sprayer unit from the bottom of the trigger sprayer unit in a preferred embodiment of the invention.

FIG. 3 shows a perspective side view of the trigger sprayer with the tab intact,

FIG. 4 shows a cross sectional view of the trigger sprayer with tab intact.

FIG. 5 shows perspective cross sectional view of the aerosol sprayer with a trigger sprayer and tab intact in a preferred embodiment of the invention.

FIG. 6 shows a perspective view of the trigger sprayer looking from above.

DETAILED DESCRIPTION

Referring now to FIG. 1, a preferred embodiment of the invention is a can 1 that is strong enough to withhold aerosol can pressure. The can 1 has a can hole 2 at the top of the can. A mounting cup 3 at the top of the can is configured to fit on top of can 1 into the can hole 2. The mounting cup 3 has a actuator stem 4 which is attached to it and a dip tube 5 extends from the stem through the mounting cup into the can 1. The can 1 is filled partially with a freeze spray formulation 7 inside the can 1. The can 1 also has the freeze spray formulation in a gaseous state 6.

Referring now to FIG. 2 a preferred embodiment of the invention shows the bottom of a trigger spraying unit 8 in a preferred embodiment of the invention. The trigger sprayer unit 8 has a rim 9 configured to snap onto the mounting cup 3. The trigger sprayer unit also has one or more fitting units 10 that are configured to support and to grasp onto the mounting cup 3. The trigger sprayer unit 8 has a chamber hole 11 which secures over the actuator stem 4. The chamber hole 11 leads into a direction chamber 12 and is attached to the back of the trigger sprayer unit 8. A trigger 15 is able to pivot at a slight angle horizontally that allows it to pivot up and down. The trigger 15 uses a trigger pivoting member 16 to pivot up and down and is held in place by a trigger pivoting member holder 13.

Referring now to FIG. 3 a preferred embodiment of the invention shows a perspective side view of the trigger sprayer unit 8. A tab 17 is fitted on top of the trigger sprayer unit 8 which is attached to the trigger 15 in a preferred embodiment of the invention. The tab 17 must be removed for the trigger 15 to move and therein being able to move the nozzle 14. Referring now to FIG. 4 a cross sectional view of the trigger sprayer unit 8. The chamber hole 11 is at the bottom and the rim 9 can be seen that fits over the mounting cup 3. A trigger 15 fits inside the trigger sprayer unit 8. The chamber hole 11 goes into a direction chamber 12 which is hollow and allows the freeze spray formulation 7 to flow through. The freeze spray formulation 7 flows through the chamber hole 11 into direction chamber 12 out a nozzle 14. The trigger 15 pivots up and down by being pressed and by way of its trigger pivoting member 16. The trigger 15 has a nozzle holder 25 that holds onto the nozzle 14.

Referring now to FIG. 5 which shows a perspective side view of a aerosol freeze sprayer with trigger. A aerosol freeze sprayer with trigger whole unit 18 is shown as the whole invention. In this perspective view the can 1 is shown filled with freeze spray formulation 7. The upper portion of the can is filled with the gaseous freeze spray formulation 6 and the dip tube 5 goes down to the liquid freeze spray formulation 7. A mounting cup 3 holds the pressure inside the can 1. The trigger sprayer unit 8 fits onto the actuator stem 4 onto the mounting cup 3. The direction chamber as it fits on the actuator stem 4 is shown. The tab 17 as it fits on top of the trigger sprayer unit 8 and the nozzle 14 wherein the freeze spray formulation 7 flows out. The trigger pivoting 16 can be seen in Referring now to FIG. 6 shows a view of the trigger sprayer looking from above. The tab 17 is shown as it sits on top of the trigger sprayer unit 8. In this perspective view the tab has breakaway hinges 30 that allows the tab 17 to be pulled off. When the tab 17 is pulled off the nozzle 14 and direction chamber 12 are free to move up and down as the trigger 15 is pressed. 

1. An aerosol sprayer comprising: A. Aerosol freeze spray formulation and delivery system which comprises:
 1. (a) a aerosol can;
 1. contains 100% difluoroethane;  (b). a trigger sprayer that is comprised of;
 1. a trigger that can be depressed horizontally;
 2. a nozzle in which the freeze spray will be dispensed as a mist spray under pressure and flow through when the trigger is depressed.
 2. The invention is: A. Aerosol freeze spray formulation and delivery system which comprises:
 1. (a) A aerosol can;
 1. contains 100% 2,3,3,3-tetrafluoropropene;  (b). a trigger sprayer that is comprised of;
 1. a trigger that can be depressed horizontally;
 2. A nozzle in which the freeze spray will be Dispensed as a mist spray under pressure and flow through when the trigger is depressed.
 3. The invention is: A. aerosol freeze spray formulation with delivery system which comprises:
 1. (a) a aerosol can;
 1. contains aerosol freeze spray formulation;  (b). A trigger sprayer that is comprised of;
 1. a trigger that can be depressed horizontally;
 2. a nozzle in which the freeze spray will be dispensed under pressure and flow through when the trigger is depressed.
 4. The invention as recited in claim 3 wherein the freeze spray formulation is 70-99 percent difluoroethane and 1-30 percent dimethyl ether (DME)
 5. The invention as recited in claim 3 wherein the freeze spray formulation is 70 and 99 percent difluoroethane of the formula and the other percentage between 1 and 30 is made up of petroleum hydrocarbon.
 6. The invention as recited in claim 3 wherein difluoroethane is between 70 and 99 percent of the formula and the other percentage between 1 and 30 is made up of an hydrofluorocarbon.
 7. The invention as recited in claim 3 wherein the freeze spray formulation is 70 and 99 percent difluoroethane of the formula and the other percentage between 1 and 30 is made up of a combination of petroleum hydrocarbon or dimethyl ether (DME) in different percentages from 1 and
 30. 8. The invention recited in claim 3 wherein the freeze spray formulation is 70 and 99 percent 2,3,3,3-tetrafluoropropene of the formula and the other percentage between 1 and 30 is made up of petroleum hydrocarbon or Dimethyl ether (DME).
 9. The invention as recited in claim 3 wherein the freeze spray formulation is 50-70 percent difluoroethane of the formula and the other percentage between 30-50 is made up of a combination of petroleum hydrocarbon or dimethyl ether (DME) in different percentages.
 10. The invention as recited in claim 3 wherein the freeze spray formulation is 50-70 percent difluoroethane and 30-50 percent dimethyl ether (DME), hydrofluorocarbon and petroleum hydrocarbon in different percentages.
 12. The invention as recited in claim 3 wherein the freeze spray formulation is 50-70 percent 2,3,3,3-tetrafluoropropene and 30-50 percent dimethyl ether (DME).
 13. The invention as recited in claim 3 wherein the freeze spray formulation is 50-70 percent difluoroethane and 30-50 percent petroleum hydrocarbon.
 14. The invention as recited in claim 3 wherein the freeze spray formulation is 50-70 percent 2,3,3,3-tetrafluoropropene and 30-50 percent petroleum hydrocarbon.
 15. The invention as recited in claim 3 wherein the freeze spray formulation is 50-70 percent difluoroethane and 30-50 percent hydrofluorocarbon.
 16. The invention as recited in claim 3 wherein the freeze spray formulation is 70-99 percent 2,3,3,3-tetrafluoropropene and 1-30 percent hydrofluorocarbon.
 17. The invention as recited in claim 1 wherein this is a method for freezing tissue biopsis, orthondic archwires, and electronic circuit boards.
 18. The invention as recited in claim 3 wherein the freeze spray formulation is 50-70 percent difluoroethane of the formula and the other percentage between 30-50 is made up of a combination of petroleum hydrocarbon or dimethyl ether (DME) in different percentages.
 19. The invention as recited in claim 3 wherein the freeze spray formulation is 50-70 percent difluoroethane of the formula and the other percentage between 30-50 is made up of a combination of hydrofluorocarbon or dimethyl ether (DME) in different percentages.
 20. The invention as recited in claim 3 wherein the freeze spray formulation is 50-70 percent difluoroethane of the formula and the other percentage between 30-50 is made up of a combination of hydrofluorocarbon or petroleum hydrocarbon in different percentages 